Inventor

KOETSUKA KYOHTA

JP28 patents

⚠️ This page may combine multiple inventors who share the name “KOETSUKA KYOHTA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KOETSUKA KYOHTA

RICOH KK

Developing device and magnet roller for developing device

Developing device and an image forming apparatus including the same

Long magnet, production method thereof, magnet roller and image forming device

Development magnet roller, development device, process cartridge and image forming apparatus

Developing device and process cartridge with predetermined magnetic force for an image forming apparatus

Developer holding member, development device, process cartridge, image forming apparatus and method of manufacturing hollow body

Developing roller, developing apparatus, process cartridge, and image formation apparatus

Image forming apparatus and developing device therefor

Magnet compound material to be compression molded, a molded elongate magnetic, a magnet roller, a developing agent-carrying body, a developing apparatus and an image-forming apparatus

RICOH CO LTD

Developing roller, developing device, process cartridge, and image forming apparatus

Magnet roller and method for the same, magnetic particle-support member, development device, process cartridge, and image forming apparatus

Method of manufacturing a hollow body used in an image forming apparatus

Magnetic field generating member and manufacturing method thereof, magnetic particle support body, image development device, process cartridge and image forming apparatus

Magnetic roller, developer carrier, developing device, process cartridge, and image forming apparatus

Developer carrier, development device, process cartridge, and image forming apparatus

Magnetic particle carrying device, and developing unit, process cartridge, and image forming apparatus using the same, and surface treatment method of the same

KOETSUKA KYOHTA

Developing unit, image forming apparatus incorporating same, and process cartridge including same

TERASAKA TAKUMI

Development roller, development device, process cartridge and image-forming apparatus

ABE HIROYA

Magnetic particle carrying device, and developing unit, process cartridge, and image forming apparatus using the same, and surface treatment method of the same

KOJIMA TOSHIO

Development roller, development device, process cartridge and image forming device

IMAMURA TSUYOSHI

Magnetic roller and manufacturing method thereof, developer carrier, development device, processing cartridge, and image forming apparatus

OHSAWA MASAYUKI

Develop roller, develop unit, process cartridge, and image forming apparatus

MASUDA KATSUMI

Development device, and process cartridge and image forming apparatus incorporating same

OZEKI TAKAMASA

Developer regulating member in a developing unit, process cartridge including same, and image forming apparatus incorporating same

KAMIYA NORIYUKI

Development roller including a development sleeve, surface treatment device that treats an outer surface of the development sleeve and wire member that roughens the outer surface of the development sleeve

SAWADA KIYOTAKA

Polishing sheet, polishing tool and polishing method

TAGUCHI NOBUYUKI

Development device, process cartridge, and image forming apparatus including same having multiple recesses formed on a developer bearer

INNAMI TAKASHI

Magnet roller, developer holder element, develop unit, process cartridge, and image forming apparatus